Tricking Parents: A Review of Mechanisms and Signals of Host Manipulation by Brood-Parasitic Young

Obligate avian brood parasites depend entirely on heterospecific hosts for rearing their offspring. From hatching until independence, the young parasites must deal with the challenge of obtaining sufficient parental care from foster parents that are attuned to provisioning their own offspring. Paren...

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Autores principales:	Juan M. Rojas Ripari, Cynthia A. Ursino, Juan C. Reboreda, María C. De Mársico
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	brood parasitism parent-offspring communication begging mimicry host manipulation sensory exploitation Evolution QH359-425 Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/d15db3f0376a45748f94f91a16d80335
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spelling	oai:doaj.org-article:d15db3f0376a45748f94f91a16d803352021-12-03T16:17:18ZTricking Parents: A Review of Mechanisms and Signals of Host Manipulation by Brood-Parasitic Young2296-701X10.3389/fevo.2021.725792https://doaj.org/article/d15db3f0376a45748f94f91a16d803352021-12-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fevo.2021.725792/fullhttps://doaj.org/toc/2296-701XObligate avian brood parasites depend entirely on heterospecific hosts for rearing their offspring. From hatching until independence, the young parasites must deal with the challenge of obtaining sufficient parental care from foster parents that are attuned to provisioning their own offspring. Parent-offspring communication is mediated by complex begging displays in which nestlings and fledglings exhibit visual (e.g., gaping and postures) and vocal (e.g., begging calls) traits that serve as signals to parents to adjust and allocate parental effort. Parasites can manipulate host parental behavior by exploiting these stable parent-offspring communication systems in their favor. During the past 30 years, the study of host exploitation by parasitic chicks has yielded important insights into the function and evolution of manipulative signals in brood parasites. However, despite these major advances, there are still important gaps in our knowledge about how parasitic nestling and fledglings tune into the host’s communication channels and the adaptive value of the visual and acoustic signals they exhibit. Here we review the literature pertaining to host manipulation by parasitic young, focusing on four non-mutually exclusive mechanisms (i.e., host chick mimicry, begging exaggeration, host-attuned begging calls, and sensory exploitation) and the function and evolution of the signals involved, with the aim to summarize and discuss putative adaptations for stimulating parental feeding and escaping host discrimination. Finally, we bring some concluding remarks and suggest directions for future research on the ways in which brood parasites adapt to the communication systems of other birds to exploit the necessary parental care.Juan M. Rojas RipariCynthia A. UrsinoCynthia A. UrsinoJuan C. ReboredaMaría C. De MársicoFrontiers Media S.A.articlebrood parasitismparent-offspring communicationbeggingmimicryhost manipulationsensory exploitationEvolutionQH359-425EcologyQH540-549.5ENFrontiers in Ecology and Evolution, Vol 9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	brood parasitism parent-offspring communication begging mimicry host manipulation sensory exploitation Evolution QH359-425 Ecology QH540-549.5
spellingShingle	brood parasitism parent-offspring communication begging mimicry host manipulation sensory exploitation Evolution QH359-425 Ecology QH540-549.5 Juan M. Rojas Ripari Cynthia A. Ursino Cynthia A. Ursino Juan C. Reboreda María C. De Mársico Tricking Parents: A Review of Mechanisms and Signals of Host Manipulation by Brood-Parasitic Young
description	Obligate avian brood parasites depend entirely on heterospecific hosts for rearing their offspring. From hatching until independence, the young parasites must deal with the challenge of obtaining sufficient parental care from foster parents that are attuned to provisioning their own offspring. Parent-offspring communication is mediated by complex begging displays in which nestlings and fledglings exhibit visual (e.g., gaping and postures) and vocal (e.g., begging calls) traits that serve as signals to parents to adjust and allocate parental effort. Parasites can manipulate host parental behavior by exploiting these stable parent-offspring communication systems in their favor. During the past 30 years, the study of host exploitation by parasitic chicks has yielded important insights into the function and evolution of manipulative signals in brood parasites. However, despite these major advances, there are still important gaps in our knowledge about how parasitic nestling and fledglings tune into the host’s communication channels and the adaptive value of the visual and acoustic signals they exhibit. Here we review the literature pertaining to host manipulation by parasitic young, focusing on four non-mutually exclusive mechanisms (i.e., host chick mimicry, begging exaggeration, host-attuned begging calls, and sensory exploitation) and the function and evolution of the signals involved, with the aim to summarize and discuss putative adaptations for stimulating parental feeding and escaping host discrimination. Finally, we bring some concluding remarks and suggest directions for future research on the ways in which brood parasites adapt to the communication systems of other birds to exploit the necessary parental care.
format	article
author	Juan M. Rojas Ripari Cynthia A. Ursino Cynthia A. Ursino Juan C. Reboreda María C. De Mársico
author_facet	Juan M. Rojas Ripari Cynthia A. Ursino Cynthia A. Ursino Juan C. Reboreda María C. De Mársico
author_sort	Juan M. Rojas Ripari
title	Tricking Parents: A Review of Mechanisms and Signals of Host Manipulation by Brood-Parasitic Young
title_short	Tricking Parents: A Review of Mechanisms and Signals of Host Manipulation by Brood-Parasitic Young
title_full	Tricking Parents: A Review of Mechanisms and Signals of Host Manipulation by Brood-Parasitic Young
title_fullStr	Tricking Parents: A Review of Mechanisms and Signals of Host Manipulation by Brood-Parasitic Young
title_full_unstemmed	Tricking Parents: A Review of Mechanisms and Signals of Host Manipulation by Brood-Parasitic Young
title_sort	tricking parents: a review of mechanisms and signals of host manipulation by brood-parasitic young
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/d15db3f0376a45748f94f91a16d80335
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Tricking Parents: A Review of Mechanisms and Signals of Host Manipulation by Brood-Parasitic Young

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